How to solve boot loop issue on Samsung Galaxy S2?

How to solve boot loop issue on Samsung Galaxy S2?

226

Help, my Samsung Galaxy S II has boot loop issue after I installed custom firmware!!! Err… This is the first time that I faced boot loop issue on my Samsung Galaxy S2. Yes, right after I factory data reset the newly installed Lite’ning ROM v5.0. Seem like Lite’ning ROM v5.0 can’t survive factory data reset from phone and I tried to wipe data/factory reset and wipe cache partition with ClockworkMod Recovery also did not help. Reinstall Lite’ning ROM through Odin again also does not help to solve boot loop issue. No worry, here is the step by step guide to solve boot loop issue on Samsung Galaxy S2.

Prerequisites

  • Odin3
  • Stock Firmware

How to solve boot loop issue on Samsung Galaxy S2?

  1. Press and hold down Volume Up + Home + Power buttons at the same time.
  2. Release all buttons when you see SGS2 Logo.
  3. ClockworkMod Recovery or stock Recovery Mode will be loaded then.
  4. Select wipe data/factory reset.
  5. Then select Yes — delete all user data.
  6. Turn off your phone after that.
  7. Press and hold down Volume Down + Home + Power buttons at the same time.
  8. Press Volume Up button when warning prompt.
  9. Odin download mode will be loaded.
  10. Connect USB cable to your phone.
  11. At PC, extract the stock firmware .tar file that you downloaded to Firmware folder.
  12. Then bring up Odin3.
  13. Click on PDA.
  14. Select the .tar at Firmware folder.
  15. Click Start then.
  16. Remove USB cable from your phone when you see green PASS! at Odin3.
  17. That’s all and enjoys the stock firmware.

Your Samsung Galaxy S2 should not have boot loop issue after install the stock firmware. Everything is back to normal again. Cheer…

Download Odin3 v1.85 here.
Download official Samsung Galaxy S2 firmware here.

  • Danny

    Does this unroot or remove cwm or undo anything else important?

    • http://www.jayceooi.com Jayce

      Yes, everything back to stock.

      • hammad

        hey i have tried everythng i find in ths blog but i havent solved ths boot loop isuue pls help me jayce

        • http://www.jayceooi.com Jayce

          Wipe data and cache in recovery mode did not help? Which firmware are you using now?

          • hammad

            yeah jayce i wipe the data and cache in recovery aswell…well i bought my s2 last year i never updated or rooted it..it was on same android version when i frst use it aftr unboxing…it was 2.3.3 i guess..i just factory reset it and clear data frm sd card in privacy….after i did it my phone restarts and frm then on it has loop issuee..actually i have tried every thng i found on intrnt about flashing stock roms via odin…i have tried numbr of roms wth single file and 3 file method even i have tried a stock flash rom I9100XXKI3….actually my phone is not flashing the rom i guess by odin..odin shows everythng is done properrly like not a sngle issue wth the odin but in real my phone i thnk not allowing to flash the rom every tym i flash i still got bootloop issue..m very tense and people saying ur bootloader is crashed and u cnt do anythng except to repair its hardware :( i dnt wanna unseal my s2 :(

          • hammad

            in download mode my phone is showing
            product name: gt-i9100
            custom binary download:no
            current binary: samsung official

            i have done proper flashing of various stock roms aftr bootloop issue but in real my phone doesnt flash any rom :(

            • http://www.jayceooi.com Jayce

              Since you did not have custom binary download at all, send it to Samsung Service Center. Ask Samsung Support to flash it for you.

              • Lee

                I am having the same problem now. What is “rom” that you all talking about?

                • http://www.jayceooi.com Jayce Ooi

                  Own stock firmware.

  • Danny

    And is this ok for the korean version of the phone the, 250s gti9100m?

    • http://www.jayceooi.com Jayce

      Not sure.

  • jason

    So, I have followed everything step by step and some reason I am still getting the loop. Any other possible fixs. I have the stock fireware and I also have a image file. Maybe Ill try that

  • jason

    Sorry mate, I tryed both things and it worked. So, I am not sure on which one worked.

    *but thanks for all the info,.

  • mikael

    hi jayce. i extracted the stock firmware of GT-I9100_XME_I9100XWKF1_I9100DXKF1_I9100OLBKE5 but i haven’t found a .tar file in the extracted firmware folder. also, i extracted the Kernel_I9100XWKF1 but it requires a password. would you happen to know what it is?
    hope to hear from you soon. thanks.

    • http://www.jayceooi.com Jayce

      Huh? Just click on it to extract the exe. Or are you using any unzip software? The password for the kernel is at XDA website too.

      • mikael

        thanks. i’ll give it a go.

        • Fahdsbs

          the password on all kernels shud be ” intratech@XDA “

  • jo

    i get boot loop going to stock kg7

    and not to custom firmware :/

    • http://www.jayceooi.com Jayce

      Did you wipe data / factory reset?

  • radi

    Hi, just did all that was recommended and my phone still has the problem. even after uploading the stock firmware to it?
    galaxy s2.

    can you help?

    • http://www.jayceooi.com Jayce

      Did you wipe data/factory reset?
      To understand better, what had you done until you get into this issue?

  • mikael

    hi jayce. HELP. just like radi, i have the same problem. i did everything that was instructed but i am still stuck to the same screen–SGS2 balck screen (without the yellow triangle). prior to it happening, i upgraded to CF-Root-SGS2_XX_OXA_KI3-42-v4.2-CWM4 from the v.4.1 so i can use the XXKI3_JKay_CFC_GreenEdge_Deluxe_ThemeV11_deodexed. neither v.4.1 nor v.4.2 did anything for the deodexed theme. when my phone rebooted, it is now stuck to the black screen i was telling you about. what should i do?

    • http://www.jayceooi.com Jayce

      You are using stock firmware (odexed) or custom firmware (deodexed) now?

  • mikael

    i used odin & put back the stock firmware (KI3) and since it was stuck on black screen, i used the OLD BOOTLOADER (KI3) but to no avail. my phone is still stuck to the same black screen.

    • http://www.jayceooi.com Jayce

      You installed the wrong JKay Theme. It should be odexed on stock firmware. Just reinstall the correct JKay Theme will do.

  • mikael

    how can i do that now that i am still stuck to the black screen even if i restored my phone to stock firmware? how do i get out of the black screen of SGS2?

    • http://www.jayceooi.com Jayce

      Do you still have CWM? If no, follow above guide to back to stock firmware.

  • mikael

    i cannot get out of the black screen even after doing the above guide for about 5 times now.

    • http://www.jayceooi.com Jayce

      You still can see SGS2 Logo, right? Try to wipe cache too this time.

  • mikael

    i already did that, and also wiped the data/factory reset. i turned my phone off for awhile, and when i turned it on again, it still shows SGS2 black screen & stays that way (unless i turn the phone off).

    • http://www.jayceooi.com Jayce

      Hmm… You should be able to back to stock firmware after wiped data and cache. Just to double confirm, is your firmware tar file is fine (not corrupted)?

  • mikael

    yes, it is fine. i was able to use it earlier today when i changed my rom from leomar revolution to the KI3 firmware.

    • http://www.jayceooi.com Jayce

      Try to install your original stock firmware see.

  • mikael

    i have been waiting for about 8mins now… still shows the black screen.

    • amir

      im having the same problem please help jayce i beg u :(

      • http://www.jayceooi.com Jayce

        What had you done until you got this issue?

  • inderpr

    Thx a lot!!! With the wipe data and cache the phone boots normal and now I be able to use it. Thx…..

  • Dale

    sir jayce i have a problem..im facing a boot loop..it happen when i factory reset through settings my samsung galaxy s2 with checkrom revolutionHD v 2.0.0 and with a kernel of siyah v 2.0 rc3.. it happens when i factory reset the phone.. now i cant get to clockworkmod recovery or even the stock recovery..what should i do? il wait for your reply! tnx!

    • http://www.jayceooi.com Jayce

      I did not try CheckROM RevolutionHD v2 yet.
      Since you cannot boot into CWM at all, try to install stock firmware with Odin.

  • Dale

    i cant boot to recovery mode.. i read that installing a firmware the automatically wipes data would help.. is XXKI3 suitable? and also find Villainrom 1.1 the same? can that help? tnx!

    • http://www.jayceooi.com Jayce

      Not sure about Villainrom. But XXKI3 at my blog is wipe version.

      • Dale

        so i can use it to flash through odin? since i cant wipe data through recovery mode because it isnt showing up..huhu..

        • http://www.jayceooi.com Jayce

          tar file is meant to flash with Odin.

          • Dale

            if i can go to recovery mode could i simply do restore a backup? (that is if i can go to recovery mode) restoring a backup would be safe right?

            • http://www.jayceooi.com Jayce

              Yup, I usually restore CWM backup when I faced issue.

              • Dale

                bad thing, i cant got to CWM. huhuhuhu.. im holding the volume up +home + power key..and when the logo shows up.. i simply release the buttons..but none was happening..its stuck on the logo

  • Dale

    hope XXKI3 stock firmware will wipe data..so that it will erase the datas that is causing the phone to have boot loop.

    • Dale

      sir is XXKI4 stock firmware a wipe version too?

      • http://www.jayceooi.com Jayce

        I don’t think so…

        • Dale

          sir! my phone is fixed! i flashed a stock XXKI3! tnx sir!! now i want to install stock XXKI4..what should i do.. should i go to stock recovery to wipe datas and cache or should i install it without doing anything just flash thru odin? tnx

          • http://www.jayceooi.com Jayce

            Just follow firmware installation guide with Odin…

  • Johan Schutter

    Jayce,

    This week I’ve root my SGS2, but then there was the yellow triangle.
    I bought a usb jig but no success, still the yellow triangle!

    The firmware is 2.3.4.

    Can this be the problem, how to solve this?

    Thanks

    Johan

    • http://www.jayceooi.com Jayce

      Does your SGS2 load into Odin download mode when you plug in USB Jig?
      http://www.jayceooi.com/2011/08/08/how-to-remove-yellow-triangle-on-samsung-galaxy-s2/

      • Johan Schutter

        Yes, Odin appears.

        Johan

        • http://www.jayceooi.com Jayce

          Which firmware are you using? Eg, DXKH2.

          • Johan Schutter

            I’m using Android Gingerbread 2.3.4./19100XX11/Kernel2.6.35.7-19100CEK12-CL586309.

            I root my SGS2 this week.

            I haven’t much knowledge about these kind of problems so if I give you the wrong information, please tell.

            Johan

  • Johan Schutter

    Jayce,

    I have 2 downloads through XDA as you told me.
    The old and new bootloader, but how can I set and reset these on my sgs2?

    Thanks

    Johan

    • http://www.jayceooi.com Jayce

      Follow guide at XDA to install the old bootloader. Then use USB Jig.

  • shwe

    hello. you helped me earlier with the appropriate kernel.

    however, i believe i flashed cyanogenmod incorrectly onto my samsung galaxy s2 (international) i have tried loading the stock firmware and i am unable to get phone to boot up.

    it stays stuck on an empty battery screen. whenever i try to go into cwm it stays stuck on the downloading screen and does not go into recovery.

    please advise on what to do. thank you sooo much.

    • http://www.jayceooi.com Jayce

      Just flash the stock firmware if you can’t load CWM.

      • shwe

        i tried that. the kernel i was one during flashing was CE_XEN_KI2 but before rooting it was UHKI2.

        i used your cf root which was – CE_XEN_KI2

        which stock firmware should i use then?

        • http://www.jayceooi.com Jayce

          Your original stock firmware. Not CF-Root.

  • jas

    need help can get out of samsung screen follow to wipe cache and everything loaded official and still same message.. please help me

    • http://www.jayceooi.com Jayce

      Sorry, don’t understand you. What is your problem actually?

  • jas

    my samsung s2 .. stuck on loading screen follow your steps . still not working for me.. when i press home+down+home and then press up its says 2 binary. tried to reload orginal fw . still did not work for me. how can i fix this.. please help

    • http://www.jayceooi.com Jayce

      So your problem is boot loop, right? Please provide more info in order for me to understand better.

      1.Did you wipe data with ClockworkMod Recovery or stock Recovery Mode?
      2. Which firmware did you try to install?

  • jas

    yes boot loop. yes tried already to load official fw. and it said on the android system recovery is cant access to ‘/system/csc/glb/system/’ .Firmware i installed is the ki2 version earlier but was successful.
    i was trying to install the cyanogen when this happen.
    already follow the steps posted above and wont work. :(

    Fw: i installed is the ki2 version earlier but was sucessful.
    what should i do??

    • http://www.jayceooi.com Jayce

      KI2 is your original stock firmware?

  • jas

    actually as far as i remember is like ki1 or ki2

    • http://www.jayceooi.com Jayce

      In this case, I have no further idea already since my guide does not work for you. Sorry…

  • rahul

    Hi Jayce,
    Nice guide posted.

    But It didn’t solved my problem. Can you please help me?
    I have samsung galaxy s2 with current firmware version: PDA:KF4 / Phone:KF2 / CSC:KF1(H3G).
    I tried to update XWKK5 from androidadvices.com, and got the boot loop. My phone stuck on Samsung Galaxy SII logo.

    I tried to flash stock firmware with odin 1.85. Firmware i used is GT-I9100_H3G_I9100XWKF4_I9100NEKF2_I9100H3GKF1.tar

    I can not enter recovery mode by vol up + menu + power. I can only enter Download mode, and odin can flash any firmware successfully. But none of the firmware solved boot loop. I also tried to flash Villianrom1.1 with odin, but no success.

    Can you please help me?

    Thanks in Advance.
    -Rahul

    • http://www.jayceooi.com Jayce
      • rahul

        Thanks Jayce,
        I have downloaded. and trying now. Will post you update.

        • rahul

          By the way Jayce,

          DO i need to tick REPARTITION in the odin??
          As i read somewhere to strictly do not tick it.

          What is the effect of ticking it or not ticking it? Can you explain. I am waiting for your answer, and then i will start flashing.

          You are a really helpful person.
          Thanks a lot.

          • http://www.jayceooi.com Jayce

            NO, DON’T tick it.

            SGS2 has partitions like system, bootloader, user space… Repartition will rearrange these spaces. ONLY tick it when you are SURE what you are doing.

            • rahul

              Thanks Jayce,

              I flashed without ticking re-partition.
              Looks like, it is still in boot loop.

              When i flashed other rom some time ago, it showed phone loading stuff, applying some multi-csc etc..

              But this time it did not appear.
              What should i do now?

  • http://www.jayceooi.com Jayce

    @rahul: Yup, that’s the one.

    • rahul

      I just have to flash it with odin in PDA, right?

      • http://www.jayceooi.com Jayce

        Just follow the guide…

        • rahul

          I followed the guide.

          It is still in boot loop. But now below the samsung logo, there a yellow triangle with exclamation mark. What does it mean? and what next?

          • http://www.jayceooi.com Jayce

            Yellow triangle will show up when you install custom kernel / firmware.

            Can you load ClockworkMod Recovery now ~ vol up + menu + power?

  • rahul

    No i still can’t load ClockworkMod Recovery with vol up + menu + power. Is there any other method?

    • http://www.jayceooi.com Jayce

      Sorry, not menu button (just copy and paste yours). It is Volume Up + Home + Power buttons. Can?

      If still cannot, I have no idea for the moment. Sorry…

  • rahul

    Yes, i used Volume Up + Home + Power buttons. But still in the loop.
    Is my phone bricked?

    • http://www.jayceooi.com Jayce

      Not totally brick. Brick == you can’t load CWM and Odin download mode.

      You still can load Odin download. This is good. But I am not sure why you can’t load recovery mode.

      Did you repartition your SGS2?

      • rahul

        I did not re-partition when i flashed XXKI3. but yes, i did it once when i flashed other firmware. It was somewhere on internet guide. I now regret why i did that?

        Is there any method to undo it?

        Currently my phone is in restart loop with battery charging screen.

        • http://www.jayceooi.com Jayce

          You need to find the correct pit file for your stock firmware. Then refresh stock firmware + pit.

          • rahul

            XXKI3 is my latest firmware. Do you want me to find PIT file for XXKI3 or for my original firmware: XWKF4 ?

            • http://www.jayceooi.com Jayce

              Original firmware.

              • rahul

                My original firmware was :
                PDA:KF4 / Phone:KF2 / CSC:KF1(H3G).

                So how do i find .pit file for that.
                Do i search pit for XWKF4?
                or XWKF2? or XWKF1? please confirm. lot confusion.

                • http://www.jayceooi.com Jayce

                  I have no idea too because I don’t use pit file at all.

                  • rahul

                    Do you think flashing my original firmware
                    GT-I9100_H3G_I9100XWKF4_I9100NEKF2_I9100H3GKF1.tar
                    with re-partitioning ticked, can solve the problem?

                    • http://www.jayceooi.com Jayce

                      Does it have pit file inside? If no, I don’t think re-partition will work.

  • rahul

    It’s just a single .tar file with no .pit file inside.
    I have downloaded 2-3 firmware packages and all have same pit file : u1_02_20110310_emmc_EXT4.pit

    It is same in all packages. So Can i use it with XXKI3 that you suggested? How do i flash with a .pit file. Need to tick re-partition and select PDA?

    • http://www.jayceooi.com Jayce

      No, don’t use other firmware pit file. Else you might brick it totally. Just flash it like the way you did it previously.

      • rahul

        but which file i flash now?

        • http://www.jayceooi.com Jayce

          I wish that I know too.

          • rahul

            I got the recovery mode. and flashed stock firmware.
            Here is what i did.

            [1] I downloaded codeworkx’s kernel with Heimdall Suite.
            Guide Link: http://wiki.cyanogenmod.com/wiki/Samsung_Galaxy_S_II:_Full_Update_Guide

            [2] Downloaded Old downloader GT-I9100_OLD_BOOTLOADER.exe from
            http://www.multiupload.com/LQQBRQVJUD
            Source: http://forum.xda-developers.com/showthread.php?t=1075278

            [3] I flashed that bootloader with odin. and rebooted in ClockworkRecovery mod.
            and wiped data/cache and dalvik cache.

            [4] Then i flashed my stock firmware :
            GT-I9100_H3G_I9100XWKF4_I9100NEKF2_I9100H3GKF1.tar

            [5] Phone restarted and working fine.
            But the phone is not identified by kies.

            I’m now planning to flash latest stock firmware with odin from your site. Can you give me link of latest stock firmware of galaxy s2 9100.

            Thanks a lot for your help and time.

            • http://www.jayceooi.com Jayce

              Glad that your SGS2 is recovered. Remember, don’t re-partition it again. :D

              5. You might need to change CSC value.
              http://www.jayceooi.com/2011/09/03/how-to-change-csc-on-samsung-galaxy-s2/

              Latest firmware is at XDA – http://forum.xda-developers.com/showthread.php?t=1075278

              • rahul

                Hi,
                I got again in boot loop.
                Using old steps didn’t work.

                what do you suggest now?

                • http://www.jayceooi.com Jayce

                  What had you installed until got this issue?

                  • rahul

                    It actually does not matter. My phone starts whatever firmware i install. Stock ROM or Litening ROM or Wipe version of XXKI3.

                    But the phone only start once. After it gets hanged and restarts. and then again same boot loop problem. so for each firmware, phone only starts once correctly up to android settings steps. And then stucks and gets restarted it self into Samsung galaxy s2 logo.

  • tokmat

    hi jayce.. got some prob here…i try to search in this forum but failed..

    my problem is .. after i flash my sgs2 with cWm 4.0.0..my phone got the warning icon…but sometime..cWm appear..so i wipe data and install Custom ROM..after that .. it like softbrick..and now i stuck at boot and cant enter cWm anymore.. any help ? THX

    • http://www.jayceooi.com Jayce

      Can you still load Odin download mode?

      • tokmat

        yeap……problem solve now…i misflashed ROM..my sgs2 is i9100G..heheh sorry bothering you jayce.. thx

  • w9812341

    Hi,

    I have this same problem looping on boot screen but really dont want to do anything that will wipe everything from my phone. Is there anyway i can do anything that will enable me to keep all my pictures and videos or a way to get them off the phone another way?

    Hope someone can help me as i’ve got all my holiday pictures on there!

    • http://www.jayceooi.com Jayce

      All internal & external SD card contents will be intact. Just internal memory apps and data will be deleted.

      • w9812341

        So if my pictures and videos are on the internal memory i have no hope of saving them? Bloody Samsung :-(

        • http://www.jayceooi.com Jayce

          Those are in internal SD card. Safe… Anyway, what choice do you have now?

  • http://none marc

    hello
    it seems i’vethe bootloop problem aswel. I dit what you sayd. but if I connect my phone to the computer and he doesn’t pick my phone or something: they don’t connect…
    does anyone know what to do?
    please help!
    marc

    (sorry for my bad english, i’m dutch)

    • http://www.jayceooi.com Jayce

      So your phone is still facing boot loop issue after above guide?

      • http://none marc

        yes. well… i can’t the guide because I can’t connect it to my computer :(

        • http://www.jayceooi.com Jayce

          Do you have Samsung Kies installed on your Windows?

          • http://none marc

            yes. i have

            • http://www.jayceooi.com Jayce

              Odin should be able to detect your phone in this case. Can you load Odin download mode?

              • http://none marc

                yes. i can.

                • http://www.jayceooi.com Jayce

                  Try on other PC then.

                  • http://none marc

                    will i do. thirsday i go to a friend. here at home i don’t have another PC. so thirsday i wil let you know if it worked or not.

                    • http://none marc

                      i tryed it now with odin. AND IT WORKED THANKS A LOT. man i am so happy i have my phone back again thanks sooo much.

  • Dev

    Hey
    i rooted my Samsung GSII (GT I9100) and flashed the Galnet MIUI ICS Stable, the install was successful but my phone gets stuck at the MI boot screen.

    The download mode and recovery mode are working…odin is detecting the phone when connected to the pc. I have the back up files taken from CWM on my external sd (and also on my pc) any way i can restore it from that?

    Please suggest me what to do? i wanna go back to stock ROM.

    before flashing i had the XWKL1 firmware

  • jojo

    good day sir, i followed all the instruction listed above. but after that, it is still stock in samsung galaxy s2 logo. what shall i do?

    • http://www.jayceooi.com Jayce

      Try other official firmware see.

  • jojo

    Can u please help me? after i overclock my galaxy s2, it bootloop and cant restart it.when i go to recovery mode it says
    E:Can’t mount / cache / recovery /log
    E:Failed to mount /cache (no such file or directory)
    E:Failed to mount / efs (no such file or directory)

    Please help me.

    • http://www.jayceooi.com Jayce

      What had you installed until you got these errors?

      • jojo

        it goes back to stock kernel but have a yellow triangle below.

  • jojo

    i tried to overclock my cpu to 1.5ghz

    • http://www.jayceooi.com Jayce

      Overclock won’t cause file corruption issue normally. Something that you installed or changed might.

  • Sgs2freak

    Hi,
    So i want to doenload the stock firmware, but now megaupload is offline, i can’t.
    Do you know were else i can download it?
    Please reply

    • http://www.jayceooi.com Jayce

      Which firmware version do you want to download?

      • Sgs2freak

        The dutch xwke7, if not possible in that language, doesn’t matter

        • http://www.jayceooi.com Jayce

          XWKE7 firmwware is hosted in MultiUpload with many download sites to download. Can’t you use other download site?

  • Dylan

    hey when i plug my device into the computer its not recognising it. I understand that normally you would select usb debugging but obviously i can’t because its in the loop. what should i do? and yes i have kies installed. thanks in advance :)

    • http://www.jayceooi.com Jayce

      Hi Dylan, above guide does not help you?

      • Dylan

        it worked!!! i tried on another computer. thank you very much very helpful guide ;)

  • Dave

    My Galaxy S2 corrupted on an official release in Kies so I used Odin to flash it back to 2.3.3 and now it comes up with the following errors

    e: failed to mount /sd card (unknown error: 0)
    your storage is not prepared yet
    cant access to /system/csc/cpw/

    I havent tried installing clockworkmod recovery as not sure if that will help? Pls Help!!!

    • http://www.jayceooi.com Jayce

      I am also not sure. You can try.

      • Dave

        Would installing CWM invalidate the warranty?

        • http://www.jayceooi.com Jayce

          Yes, install unofficial stuff will void the warranty.

  • Joel

    hello, i am also experiencing a boot loop, i never upgraded the firmware, it happens to reboot only when i listen to music, this is so annoying!!! do you have any solutions or explanation to that? thanks in advance.

    • http://www.jayceooi.com Jayce

      Default music player app? Or 3rd party one?

      • Joel

        default music player.

        • http://www.jayceooi.com Jayce

          Then you might need to factory reset it.

          • Joel

            oh, will that delete all the data in my phone?

            • http://www.jayceooi.com Jayce

              Yes, Joel.

  • Joel

    oh, thank you. Another quick question i know it doesn’t concern this topic of discussion, how do i download kies on my pc? i have been trying to look for it on the samsung website but i can’t find my way. Do you have any direct link to it?

  • dennis teo

    My s2 stuck at the splash screen after I accidentally moved some system file to sd card. Is there any way to solve this solve boot loop issue on Samsung Galaxy S2 without erasing all the data in the phone?

    • http://www.jayceooi.com Jayce

      Sorry dennis, no idea about it.

  • R

    tried to update to ics viw new android advices without rooting phone it didt work …. now the phne wont come on

  • Vince

    hey can you help me with my problem??

    okay so i flashed a custom rom on my sgs2 and worked fine… i wanted to overclock it and downloaded the .tar file and flashed it via odin.. odin shows PASS and a green background.. however since my phone rebooted it is stuck in the sgs2 logo.. i can still enter dl mode and recovery mode. help please

    • Vince

      i think i flashed a bad kernel? correct me if im wrong cuz im still new to this

      • http://www.jayceooi.com Jayce

        Try to factory reset in recovery mode first. If still cannot, flash back official firmware.

  • shaan

    friend..please help me ..i tried to install i c s on my sgs2 i9100g but it becomes more problem for me ..now i lost everything it showing now only a’ triangular yellow warning logo’ so please help me to restore back again with 2.3.6 os…i m waiting for your advise

  • hellboy

    hi, im unable to open my samsung galaxy s2…..i tried all the way it says….sometime SGS2 logo appears but not goin any further…..

    • http://www.jayceooi.com Jayce

      Hi hellboy, what did you do until you got this issue?

  • Hans

    Jayce, my SGS 2 is having reboot loop problem recently. I’m still using the stock ICS 4.03. What cause it this way is likely from the large amount of apps I install in my phone (I search this issues and found this reason as I never install any custom ROM). My phone is rooted. I haven’t backed up my data yet :(
    Sometimes my phone will work after I lt it cooling down, sometimes It takes some efforts like uninstall some apps and let it off, then turn it on again. The problem will cease to happen if I unmount or plug out the SD Card. Guess u have heard this kind of issue, haven’t u?
    Any suggestion?

    • http://www.jayceooi.com Jayce

      Backup your apps. Factory reset your phone. Restore those needed apps only.

  • ryzyryry

    Hey Jayce, expert needed. I have a bootloop on my sgs2 but this time it will not go into recovery mode (up+home+power) but will go into download mode. I was on the official ICS update in the UK prior to it crashing and it’s an I9100.

    I get how to use Odin as it seems simple enough, I’m just struggling to find the correct firmware for it and there was talk of flashing the kernal over too on one site. Is there a simple way to fix my bricked phone e.g links I can use to download the correct stuff?

    Thanks

  • Nikki

    Hi sir, its my first time to root my galaxy s2, running on 4.0.3.. i found a video on youtube on how to root your phone.

    now my phone does not start up, when i turn it on, the samsung i9100 and a triangle appears, then a logo with ics written on it, siyah kernel.. but does not start up..

    is my phone bricked? or is it boot looped?? PLS help.. Thank you..

    • http://www.jayceooi.com Jayce

      Not brick. Might be bootloop.

  • Carola

    This worked! Thanks a lot!!

  • Rohan

    Hi, my phone is stuck at the Galaxy S2 logo. I can’t get into recovery mode or ODIN mode. Is there any other way that i can flash the stock rom back ?

    • http://www.jayceooi.com Jayce

      Sorry Rohan, you can’t do much without recovery and Odin mode. Please consult Samsung Support for help.

      • Rohan

        Thanks for replying. However it does go into Download Mode, would that help in any way ?

        • http://www.jayceooi.com Jayce

          Install stock firmware with Odin then.

          • Rohan

            I’m sorry but could you please give me a link for doing it on a i9100G ? I’m kind of new to this and still not familiar with it.

            • http://www.jayceooi.com Jayce

              Sorry Rohan, I don’t have article for I9100G. But the process is the same.

              • Rohan Dayal

                I found a guide and finally got it working. Thanks a lot :)

  • androidlover2.0

    I LOVE U!
    Now my phone works again.
    Thanks :D

  • Asad

    Mate u r a life saver !

  • Wil

    I have tried these steps numerous times. I flashed a Rom a long time ago and I sent the phone to a friend. He now has a new phone and the phone will not come from Boot loop it shows a samsung label then shuts off and vibrates in a looping fashion. The screen remains black but the phone still vibrates. I really want to have it unrooted and running the stock T-mobile Jellybean software. Please help.

    • http://www.jayceooi.com Jayce Ooi

      Hi Wil, above method did not help?

  • Wil

    Not at all. It doesn’t stay “still” long enough for the program in Odin to read it as soon as it goes into download mode it loops again. I’ve tried seriously over 40 times. I hate to discard it.

    • http://www.jayceooi.com Jayce Ooi

      Huh? I have no idea in this case. You should not bootloop in Odin download mode. Please consult Samsung Support.

  • Wil

    Thank You.

  • Tib

    I see you are still replying here, so I might as well try to find help here. Here is my problem http://forum.xda-developers.com/showthread.php?p=41870545

    Quoting myself “Edit: Okay I tried again(flashing kernel), now with the newest stable Siyah kernel “Siyah-s2-v5.0.1″. This time it either loops in boot or stops at the Siyah logo. ”
    Should I try stock kernel? If so which one, all I know is that it was ice-cream os and XEO.
    I would like to try everything before wipe… actually I can’t even get to that screen.
    Thanks, Tib.

    • http://www.jayceooi.com Jayce Ooi

      Try the latest version of Siyah see.

      • Tib

        I tried that after I posted here, same results with loops and after some loops stops at the Siyah logo. Is there a way to make a backup of files like this?

        • http://www.jayceooi.com Jayce Ooi

          Yes, if you can boot into CWM.

          • Tib

            That is the second problem can’t get it in recovery mode just download mode. Should I try another kernel and see after that? If so which one would you suggest.

            • http://www.jayceooi.com Jayce Ooi

              You can try CF-Root if you know your previous kernel.
              http://www.jayceooi.com/2011/08/03/download-cf-root-for-samsung-galaxy-s2/

              • Tib

                Well I can say that once Facebook was nice to have everything logged. I wrote in a post like 3-4 months ago there what I have. CSC XEO, pda and phone I9100XXLPB and CSC I9100OXXLP5. So I have to look at XXLPB and XXLP5? But I can’t find it in that list in your link.

                • Tib

                  I’ll try LPQ, seems the nearest. Or so I hope.

                • http://www.jayceooi.com Jayce Ooi

                  No luck for CF-Root. You can try the latest CF-Root if you want. Or try to restore to stock firmware with Odin.

                  • Tib

                    Okay, I tried CF-Root-SGS2_XX_XEO_LPQ-PROPER-v5.4-CWM5. It failed. I tried I9100XXMS1_I9100OXAMS1_XEO, still failed. And I still can’t get into recovery, just download mode.

                  • Tib

                    Forgot to say that the Yellow Triangle disappeard with the OFW I9100XXMS1_I9100OXAMS1_XEO, it’s 915MB.

                    • http://www.jayceooi.com Jayce Ooi

                      Hmm… Try to find a full wipe unofficial firmware and install it.
                      By the way, how do you load recovery?

                  • Tib

                    Vol up + home + power?

  • http://www.jayceooi.com Jayce Ooi

    Hi Tib, let’s start a new thread. Yes, that’s the correct combo to load recovery.

    • Tib

      Okay. And hope you don’t mind I’m still trying stuff that are suggested on XDA. They suggested me to try a different port.

      • http://www.jayceooi.com Jayce Ooi

        Don’t mind at all. As long as you can solve your issue, I am happy with that. :D

        • Tib

          I don’t know if it was the different port issue, but I tried again with Siyah beta release and it worked, finally. Thank you so much for the help. I love the fact that you reply to everyone and try to help everyone.
          Before I start looking, what do you suggest to unlock the phone, I mean SIM unlock. It asked for the pin on the start. I have Orange Romania in it, but I also use other carries in it sometimes.

          • http://www.jayceooi.com Jayce Ooi
            • Tib

              Was able to unlock it, thanks. But now I have another problem :( Could you check this link where I said what the problem is?
              http://forum.xda-developers.com/showpost.php?p=41887219&postcount=13

              • Tib

                Okay nevermind, for some reason it works now… It’s not reasurring but it works.
                Thank you for the great help. I don’t think that I could have done it without you and the member on XDA who suggested a different port.
                Best of luck with your web-page, I love it because it was alot of help :). Will recomend it to others too.

                • http://www.jayceooi.com Jayce Ooi

                  You are most welcome, Tib. :)

  • SLR

    Hi joyce, i have been using resurrection remix version 2.6 ICS custom rom for quite a long period of time, suddenly while i was using the mobile, it literally got hanged. Then, when I off and on, it is loading soo long but didn’t enter the main menu.
    I tried entering to CMWR then i receiving this error as below:

    E: Can’t mount /cache/recovery/command
    E: Can’t mount /cache/recovery/log
    E: Can’t open /cache/recovery/log
    E: Can’t mount /cache/recovery/last_log
    E: Can’t open /cache/recovery/last_log

    Can i knw what is the exact problem and how to solve it??

    • http://www.jayceooi.com Jayce Ooi

      Try to clear cache and dalvik cache see.

      • SLR

        i did clear cache but can’t clear dalvik cache…it keep on show the message above

        • http://www.jayceooi.com Jayce Ooi

          What is the error message when clear dalvik cache?

          • SLR

            when i press clear dalvik cache, below as usual this msg :

            E: Can’t mount /cache/recovery/command
            E: Can’t mount /cache/recovery/log
            E: Can’t open /cache/recovery/log
            E: Can’t mount /cache/recovery/last_log
            E: Can’t open /cache/recovery/last_log

            is coming out..but no effect after that. I wonder what’s the problem

            • http://www.jayceooi.com Jayce Ooi

              Hmm… this should fix it.
              Or you can try to restore everything back to stock firmware.

              • SLR

                So, in this condition can i do any backup? such as application + data n others files?

                • http://www.jayceooi.com Jayce Ooi

                  Use Titanium Backup to do that.

  • SLR

    the rom is not starting up also. so i cant use titanium backup to perform backups. its just loadin until ICS then nthng happens. the phone just get hot. and Now my phone cant even on. means there is no display but whn i press my “ON” button and wait awhile, the phone tend to get hot as well.

    • http://www.jayceooi.com Jayce Ooi

      Try to restore stock firmware with Odin in this case, SLR.

      • SLR

        thank you jayce 4 yor tech help :)

        • http://www.jayceooi.com Jayce Ooi

          You are most welcome, SLR.

          • SLR

            I wonder why my hp can’t go to recovery, can’t go to download mode or cant on. Can i know what is the problem?? but when i press the “ON” button, the hp tend to get hot. How can i solve this problem?

            • http://www.jayceooi.com Jayce Ooi

              Sorry SLR, I have no idea on these issues.

  • kolangi

    sir, i have bootloop problem in my galaxy ace,,
    i tried clockmod recovery and also install official rom (both single and multi file installation) through odin…
    but i have bootloop problem, it shows
    E: can’t mount/data (invalid argument)
    E: can’t log

    pls, help me to solve this??

    • http://www.jayceooi.com Jayce Ooi

      Hi kolangi, try factory reset in recovery.

      • kolangi

        sir, i did that.. but not worked still in bootloop problem..
        can u pls give anyother way for this?? if u know

        • http://www.jayceooi.com Jayce Ooi

          Restore back to stock firmware. Factory reset then.

  • Allen

    Thank you so much for the instructions! Whew! I got the scare of my life while working on my S2. I was trying to install CM11, it keeps aborting (don’t know why), and I got stuck at CWM Recovery. It wouldn’t boot and I really thought I had bricked my phone! It’s 1:30AM, I’m glad I can go and have a nice and peaceful sleep….. Thank you so much!

  • Neelima

    This is going to erase all my data….. Cant let that happen.
    Can you please help me. My s2 is stuck in boot loop and keeps on going. And i have a lot of my kid’s pics on the phone memory. Cant do a erase data on my phone.

    I will be really thankfull for any help in this regards.

    Thanks and regards,
    Neelima

    • http://www.jayceooi.com Jayce Ooi

      Sorry Neelima, I have no other solution. Try to consult Samsung Support.